<?php

class PageController extends AController
{

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view'),
				'users'=>array('*'),
			),
			array('allow', // allow authenticated user to perform 'create' and 'update' actions
				'actions'=>array('create','update', 'param'),
				'users'=>array('@'),
			),
			array('allow', // allow admin user to perform 'admin' and 'delete' actions
				'actions'=>array('admin','delete', 'position'),
				'users'=>array('admin'),
			),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}


	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new Page;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Page']))
		{
			$model->attributes=$_POST['Page'];
			if($model->save())
				$this->redirect(array('index','id'=>$model->id));
		}

		$this->render('create',array(
			'model'=>$model,
		));
	}


	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Page']))
		{
			$model->attributes=$_POST['Page'];
			if($model->save())
				$this->redirect(array('index','id'=>$model->id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

	

	/**
	 * Manages all models.
	 */
	public function actionIndex()
	{
		$model=new Page('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['Page']))
			$model->attributes=$_GET['Page'];

		$this->render('index',array(
			'model'=>$model,
		));
	}


   public function actionPosition()                    //перемещение позиции 
    {  
        if(isset($_GET['position']) && $_GET['position']=='up' && isset($_GET['pos']))         //если выбрана стрелка вверх
        {
           Page::model()->updateAll(array('position'=>0), 'position=:position', array('position'=>$_GET['pos']-1));                     //предидущему присваиваю 0
           Page::model()->updateAll(array('position'=>$_GET['pos']-1), 'position = :position', array('position'=>$_GET['pos']));        //текущему -1
           Page::model()->updateAll(array('position'=>$_GET['pos']), 'position = :position', array('position'=>0));        
        }
       
       if(isset($_GET['position']) && $_GET['position']=='down' && isset($_GET['pos']))         //если выбрана стрелка вниз
        {
           Page::model()->updateAll(array('position'=>0), 'position=:position', array('position'=>$_GET['pos']+1));                      //следующему присваиваю 0
           Page::model()->updateAll(array('position'=>$_GET['pos']+1), 'position = :position', array('position'=>$_GET['pos']));        //текущему
           Page::model()->updateAll(array('position'=>$_GET['pos']), 'position = :position', array('position'=>0)); 
        }
        
             Yii::app()->request->redirect($_SERVER['HTTP_REFERER']);
  
    }       //end action


	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id)
	{
		$model=Page::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='page-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
